Rezeki, Sri, and Erin Padilla Siregar. “The Relationship Between the Character of the Mother in Labor and the Retention of the Placenta at the Afisya Clinic, Hamlet III, Melur, Sambirejo East Village, Percut Sei Tuan District Deli Serdang Regency 2017 - 2021”. Science Midwifery 10, no. 5 (November 24, 2022): 3811–3818. Accessed May 11, 2026. https://midwifery.iocspublisher.org/index.php/midwifery/article/view/938.